자바 poi 를 사용 하여 엑셀 데 이 터 를 데이터베이스 로 가 져 오 는 절차
1.먼저 Excel 템 플 릿 을 만들어 서 자바 웹 프로젝트 의 한 디 렉 터 리 에 템 플 릿 을 넣 어야 합 니 다.그림:
2.템 플 릿 이 만들어 진 후에 템 플 릿 다운로드 기능 을 먼저 실현 합 니 다.다음은 페이지 jsp 코드 입 니 다.여기에 일부 코드 만 붙 입 니 다.
<!-- excel -->
<div id="importBox" class="" style="display: none;">
<form id="importForm" action="<%=basePath%>book/dishes/backstageversion/list!importExcel" method="post" enctype="multipart/form-data"
class="form-search" style="padding-left:20px;text-align:center;" onsubmit="loading(' ， ...');"><br/>
<input id="uploadFile" name="file" type="file" style="width:330px"/><br/><br/>
<input id="btnImportSubmit" class="btn btn-primary" type="submit" value=" "/>
<input type="hidden" id="importCompanyId" name="importCompanyId" value=""/>
<input type="hidden" id="importStallId" name="importStallId" value=""/>
<a href="<%=basePath%>book/dishes/backstageversion/list!exportOrder" rel="external nofollow" rel="external nofollow" > </a>
</form>
</div>
<!-- excel -->
<div id="importBox" class="" style="display: none;">
<form id="importForm" action="<%=basePath%>book/dishes/backstageversion/list!importExcel" method="post" enctype="multipart/form-data"
class="form-search" style="padding-left:20px;text-align:center;" onsubmit="loading(' ， ...');"><br/>
<input id="uploadFile" name="file" type="file" style="width:330px"/><br/><br/>
<input id="btnImportSubmit" class="btn btn-primary" type="submit" value=" "/>
<input type="hidden" id="importCompanyId" name="importCompanyId" value=""/>
<input type="hidden" id="importStallId" name="importStallId" value=""/>
<a href="<%=basePath%>book/dishes/backstageversion/list!exportOrder" rel="external nofollow" rel="external nofollow" > </a>
</form>
</div>
<!-- Bootstrap -->
<link href="<%=path %>/res/admin/css/bootstrap.min.css" rel="external nofollow" rel="stylesheet" type="text/css" />
<link href="<%=path %>/res/admin/css/xy_css.css" rel="external nofollow" rel="stylesheet" type="text/css">
<link href="<%=path %>/res/admin/css/font-awesome.min.css" rel="external nofollow" rel="stylesheet" type="text/css">
<script src="<%=path %>/res/admin/js/jquery.min.js"></script>
<script src="<%=path %>/res/admin/js/bootstrap.min.js"></script>
<link href="<%=path %>/res/admin/jquery-select2/3.4/select2.css" rel="external nofollow" rel="stylesheet" type="text/css" />
<script src="<%=path %>/res/admin/jquery-select2/3.4/select2.min.js"></script>
<script src="<%=path %>/res/admin/jquery-select2/3.4/select2_locale_zh-CN.js"></script>
<script type="text/javascript" src="<%=basePath%>res/admin/js/layer/layer.js"></script>
<script type="text/javascript">
$(document).ready(function (){// select2
$("select").select2();
//
$("#btnImport").click(function(){
var importStallId = $("#stallId option:selected").val();
var importCompanyId = $("#companyId option:selected").val();
$("#importCompanyId").val(importCompanyId);
$("#importStallId").val(importStallId);
if(importStallId==null || importStallId==""){
alert(" ");
}else{
layer.open({
type: 1,
skin: 'layui-layer-rim', //
area: ['600px', '350px'], //
content: $('#importBox')
});
}
});
});템 플 릿 코드 다운로드
/**
*
* @throws IOException
*/
public void exportOrder() throws IOException{
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
File file = null;
InputStream inputStream = null;
ServletOutputStream out = null;
try {
request.setCharacterEncoding("UTF-8");
String realPath = ServletActionContext.getServletContext().getRealPath("/");
file = new File(realPath+"WEB-INF/mailtemplate/dishes.xlsx");
inputStream = new FileInputStream(file);
response.setCharacterEncoding("utf-8");
response.setContentType("application/msexcel");
response.setHeader("content-disposition", "attachment;filename="
+ URLEncoder.encode(" " + ".xlsx", "UTF-8"));
out = response.getOutputStream();
byte[] buffer = new byte[512]; //
int bytesToRead = -1;
// Excel
while ((bytesToRead = inputStream.read(buffer)) != -1) {
out.write(buffer, 0, bytesToRead);
}
out.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (inputStream != null)
inputStream.close();
if (out != null)
out.close();
if (file != null)
file.delete(); //
}
}
/**
*
* @throws IOException
*/
public void importExcel() throws IOException {
List<Dishes> dishesList = getDishesList(file);
if(dishesList !=null && dishesList.size()>0){
for(Dishes dishes : dishesList){
targetService.add(dishes);
}
}
String basePath = ServletActionContext.getServletContext().getContextPath();
ServletActionContext.getResponse().sendRedirect(basePath + "/book/dishes/backstageversion/list");
}
/**
* Excel
* @param filePath
* @return List
* @throws IOException
*/
private List<Dishes> getDishesList(String filePath) throws IOException {
XSSFWorkbook workBook= null;
InputStream is = new FileInputStream(filePath);
try {
workBook = new XSSFWorkbook(is);
} catch (Exception e) {
e.printStackTrace();
}
Dishes dishes=null;
List<Dishes> dishesList = new ArrayList<Dishes>();
// sheet
//List<XSSFPictureData> picturesList = getPicturesList(workBook);//
for(int numShett = 0;numShett<workBook.getNumberOfSheets();numShett++){
XSSFSheet sheet = workBook.getSheetAt(numShett);
// Map<String, PictureData> pictureDataMap = getPictureDataMap(sheet, workBook);
if(sheet==null){
continue;
}
// Row
for(int rowNum=1;rowNum<=sheet.getLastRowNum();rowNum++){
Row row = sheet.getRow(rowNum);
if(row==null){
continue;
}
dishes = new Dishes();
//Cell
Cell dishesName = row.getCell(0);
if(dishesName==null){
continue;
}
dishes.setName(getValue(dishesName));//
Cell price = row.getCell(1);
if(price==null){
continue;
}
dishes.setPrice(Double.parseDouble(getValue(price)));//
Cell oldPrice = row.getCell(2);
if(oldPrice==null){
continue;
}
dishes.setOldPrice(Double.parseDouble(getValue(oldPrice)));//
Cell summary = row.getCell(3);
if(summary==null){
continue;
}
dishes.setSummary(getValue(summary));//
Cell online = row.getCell(4);
if(online==null){
continue;
}
dishes.setOnline(Integer.parseInt(getValue(online)));//
Cell packCharge = row.getCell(5);
if(packCharge==null){
continue;
}
dishes.setPackCharge(Double.parseDouble(getValue(packCharge)));//
Cell stockNumber = row.getCell(6);
if(stockNumber==null){//
continue;
}
dishes.setStockNumber(Integer.parseInt(getValue(stockNumber)));//
Cell immediateStock = row.getCell(7);
if(immediateStock==null){//
continue;
}
dishes.setImmediateStock(Integer.parseInt(getValue(immediateStock)));//
Cell purchaseLimit = row.getCell(8);
if(purchaseLimit==null){
continue;
}
dishes.setPurchaseLimit(Integer.parseInt(getValue(purchaseLimit)));//
Cell restrictionType = row.getCell(9);
if(restrictionType==null){
continue;
}
dishes.setRestrictionType(Integer.parseInt(getValue(restrictionType)));//
Cell sort = row.getCell(10);
if(sort==null){
continue;
}
dishes.setSort(Integer.parseInt(getValue(sort)));//
Cell contents = row.getCell(11);
if(contents==null){
continue;
}
dishes.setContents(getValue(contents));//
dishes.setCreateTime(new Date());
Company company = companyService.load(importCompanyId);
Stall stall = stallService.load(importStallId);
dishes.setCompany(company);
dishes.setStall(stall);
//set PictureData pictureData = pictureDataMap.get(rowNum+""); if(pictureData !=null){ String upImageUrl = UpImage(pictureData.getData()); dishes.setImage(upImageUrl); }
dishesList.add(dishes);
}
}
return dishesList;
}
/**
* Excel
* @param hssfCell
* @return String
*/
@SuppressWarnings("unused")
private String getValue(Cell cell){
DecimalFormat df = new DecimalFormat("###################.###########");
if(cell.getCellType()==cell.CELL_TYPE_BOOLEAN){
return String.valueOf(cell.getBooleanCellValue());
}
if(cell.getCellType()==cell.CELL_TYPE_NUMERIC){
return String.valueOf(df.format(cell.getNumericCellValue()));
}else{
return String.valueOf(cell.getStringCellValue());
}
}
private String file;
private Long importCompanyId;
private Long importStallId;
public String getFile() {
return file;
}
public void setFile(String file) {
this.file = file;
}
public Long getImportCompanyId() {
return importCompanyId;
}
public void setImportCompanyId(Long importCompanyId) {
this.importCompanyId = importCompanyId;
}
public Long getImportStallId() {
return importStallId;
}
public void setImportStallId(Long importStallId) {
this.importStallId = importStallId;
}
/**
* Excel
* @param sheet
* @param workBook
* @return
*/
private Map<String, PictureData> getPictureDataMap(XSSFSheet sheet,XSSFWorkbook workBook){
Map<String, PictureData> map = new HashMap<String,PictureData>();
for(POIXMLDocumentPart dr : sheet.getRelations()){
if(dr instanceof XSSFDrawing){
XSSFDrawing drawing = (XSSFDrawing) dr;
List<XSSFShape> shapesList = drawing.getShapes();
if(shapesList !=null && shapesList.size()>0){
for(XSSFShape shape : shapesList){
XSSFPicture pic = (XSSFPicture) shape;
XSSFClientAnchor anchor = pic.getPreferredSize();
CTMarker cTMarker = anchor.getFrom();
String picIndex = cTMarker.getRow()+"";
map.put(picIndex, pic.getPictureData());
}
}
}
}
return map;
}
/**
*
* @param bytes
* @return
*/
private String UpImage(byte[] bytes){
String fileName = UUID.randomUUID().toString() + ".jpg";
String uploadURL = UpYunClient.upload(fileName, bytes);
return uploadURL;
}이상 은 자바 가 poi 를 사용 하여 엑셀 데 이 터 를 데이터베이스 에 가 져 오 는 절차 에 대한 상세 한 내용 입 니 다.자바 가 엑셀 데 이 터 를 데이터베이스 에 가 져 오 는 데 관 한 자 료 는 다른 관련 글 을 주목 하 십시오!
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